Correlation of Zoometric Indices and Morphometric Measurements in Dorper Lambs
Many studies have been conducted to identify animals with good ability for meat production. In this respect, morphometric measurements and zoometric indices are important tools to select many characteristics aiming at animal genetic improvement, increasing the profitability and sustainability of an...
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| Format: | Article |
| Language: | English |
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Instituto de Zootecnia
2022-12-01
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| Series: | Boletim de Indústria Animal |
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| Online Access: | http://localhost/index.php/bia/article/view/1857 |
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| author | Rafael Franco Bernardi Marcelo Moretin Vieira Nathalya Sanchez Mayara Isaias Vargas Natana Mendes Marques Silas Oliveira Cavalcante Ricardo Lopes Dias da Costa |
| author_facet | Rafael Franco Bernardi Marcelo Moretin Vieira Nathalya Sanchez Mayara Isaias Vargas Natana Mendes Marques Silas Oliveira Cavalcante Ricardo Lopes Dias da Costa |
| author_sort | Rafael Franco Bernardi |
| collection | DOAJ |
| description |
Many studies have been conducted to identify animals with good ability for meat production. In this respect, morphometric measurements and zoometric indices are important tools to select many characteristics aiming at animal genetic improvement, increasing the profitability and sustainability of animal production. This study was carried out at the Sheep Unit of the Instituto de Zootecnia in Nova Odessa, São Paulo, Brazil, with the objective of correlating zoometric indices and morphometric measurements in Dorper lambs. We used 26 registered uncastrated male lambs, with mean age of 102.30 ± 16.30 days and mean weight of 26.10 ± 4.14 kg. The weight was measured with mechanical scale and morphometric measurements were performed with a tape measure and a hypometer. The morphometric measurements collected were withers height (HW), rump height (HR), body length (BL), thoracic perimeter (TP) and rump width (RW). The zoometric indices were calculated by the morphometric measurements body index (BI), relative body index (RBI), thoracic perimeter-withers height ratio (TPRI), and body capacity index (BCI). Pearson's correlation coefficients were obtained using the average of morphometric measurements and zoometric indices, through the SAS software (Statistics Analyses System). The averages for HW, HR, BL, TP and RW were 52.65 ± 2.68 cm, 52.19 ± 2.75 cm, 59.83 ± 2.83 cm, 70.13 ± 4.71 cm, 25.43 ± 2.15 cm respectively. The values of the indices were 85.49 ± 4.12 %, 113.81 ± 6.14 %, 133.36 ± 8.90 % and 46.35 ± 5,45 kg/cm for BI, RBI, TPRI and BCI respectively. There was medium-high correlation (p<0.05) of withers height and BI (r = - 0.59), TPRI (r= 0.61), and BCI (r= - 0.44), respectively. Rump height also showed correlation (p<0.05) with BI (r= -0.45), RBI (r= 0.49) and BCI (r= -0.42). At the same rate, body length showed positive medium-high correlations (p<0.05) with BI (r=0.52) and RBI (r=0.49). There was a high correlation coefficient also (p<0.0001) for thoracic perimeter and TPRI (r = 0.85), and BCI (r = 0.40). The results obtained confirmed that zoometric indices and morphometric measurements are correlated and important to apply for characterization of the sheep herds, providing important data for selection and animal genetic improvement, an important factor for production intensification.
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| first_indexed | 2024-03-11T21:02:38Z |
| format | Article |
| id | doaj.art-6779a3900417452f99f174400229f8c9 |
| institution | Directory Open Access Journal |
| issn | 1981-4100 |
| language | English |
| last_indexed | 2024-03-11T21:02:38Z |
| publishDate | 2022-12-01 |
| publisher | Instituto de Zootecnia |
| record_format | Article |
| series | Boletim de Indústria Animal |
| spelling | doaj.art-6779a3900417452f99f174400229f8c92023-09-29T20:50:05ZengInstituto de ZootecniaBoletim de Indústria Animal1981-41002022-12-0179Correlation of Zoometric Indices and Morphometric Measurements in Dorper LambsRafael Franco BernardiMarcelo Moretin VieiraNathalya SanchezMayara Isaias VargasNatana Mendes MarquesSilas Oliveira CavalcanteRicardo Lopes Dias da Costa Many studies have been conducted to identify animals with good ability for meat production. In this respect, morphometric measurements and zoometric indices are important tools to select many characteristics aiming at animal genetic improvement, increasing the profitability and sustainability of animal production. This study was carried out at the Sheep Unit of the Instituto de Zootecnia in Nova Odessa, São Paulo, Brazil, with the objective of correlating zoometric indices and morphometric measurements in Dorper lambs. We used 26 registered uncastrated male lambs, with mean age of 102.30 ± 16.30 days and mean weight of 26.10 ± 4.14 kg. The weight was measured with mechanical scale and morphometric measurements were performed with a tape measure and a hypometer. The morphometric measurements collected were withers height (HW), rump height (HR), body length (BL), thoracic perimeter (TP) and rump width (RW). The zoometric indices were calculated by the morphometric measurements body index (BI), relative body index (RBI), thoracic perimeter-withers height ratio (TPRI), and body capacity index (BCI). Pearson's correlation coefficients were obtained using the average of morphometric measurements and zoometric indices, through the SAS software (Statistics Analyses System). The averages for HW, HR, BL, TP and RW were 52.65 ± 2.68 cm, 52.19 ± 2.75 cm, 59.83 ± 2.83 cm, 70.13 ± 4.71 cm, 25.43 ± 2.15 cm respectively. The values of the indices were 85.49 ± 4.12 %, 113.81 ± 6.14 %, 133.36 ± 8.90 % and 46.35 ± 5,45 kg/cm for BI, RBI, TPRI and BCI respectively. There was medium-high correlation (p<0.05) of withers height and BI (r = - 0.59), TPRI (r= 0.61), and BCI (r= - 0.44), respectively. Rump height also showed correlation (p<0.05) with BI (r= -0.45), RBI (r= 0.49) and BCI (r= -0.42). At the same rate, body length showed positive medium-high correlations (p<0.05) with BI (r=0.52) and RBI (r=0.49). There was a high correlation coefficient also (p<0.0001) for thoracic perimeter and TPRI (r = 0.85), and BCI (r = 0.40). The results obtained confirmed that zoometric indices and morphometric measurements are correlated and important to apply for characterization of the sheep herds, providing important data for selection and animal genetic improvement, an important factor for production intensification. http://localhost/index.php/bia/article/view/1857Zoometric indicesmorphometric indiceslambsselection of animalssheep |
| spellingShingle | Rafael Franco Bernardi Marcelo Moretin Vieira Nathalya Sanchez Mayara Isaias Vargas Natana Mendes Marques Silas Oliveira Cavalcante Ricardo Lopes Dias da Costa Correlation of Zoometric Indices and Morphometric Measurements in Dorper Lambs Boletim de Indústria Animal Zoometric indices morphometric indices lambs selection of animals sheep |
| title | Correlation of Zoometric Indices and Morphometric Measurements in Dorper Lambs |
| title_full | Correlation of Zoometric Indices and Morphometric Measurements in Dorper Lambs |
| title_fullStr | Correlation of Zoometric Indices and Morphometric Measurements in Dorper Lambs |
| title_full_unstemmed | Correlation of Zoometric Indices and Morphometric Measurements in Dorper Lambs |
| title_short | Correlation of Zoometric Indices and Morphometric Measurements in Dorper Lambs |
| title_sort | correlation of zoometric indices and morphometric measurements in dorper lambs |
| topic | Zoometric indices morphometric indices lambs selection of animals sheep |
| url | http://localhost/index.php/bia/article/view/1857 |
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